JBL HLA 4895, Руководство пользователя

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Step 9. Restore system to upright position.
Removal & Replacement, HLA 4897 Subwoofer System Grille
Step 1. Lay the system on its back. Remove the attachment screws.
Step 2. Carefully lift the grille from the system. Take care not to lose the set of round black rubber spacers located
between the grille and the baffleboard.
Step 3. Pre-position the rubber spacers in their original positions on the attachment rail. A small drop of slow-
setting adhesive can help in maintaining the position of these spacers, but is not necessary.
Step 4. Set the new grille in place on the baffleboard, taking care not to bend it while handling.
Step 5. Gently position the grille on the face of the baffleboard and center it.
Step 6. Starting at the four corners, loosely insert four attachment screws. Do not over-tighten screws or the edges
of the grille may be deformed.
Step 7. Insert the rest of the screws and tighten loosely. Use a mini-screwdriver blade or thin rod to position the
hole in the grille over the hole in the rail. Be careful to not damage the weatherizing foam material behind the
grille with the screwdriver.
Step 8. Check all screws for moderate tightness and visually inspect grillframe for straightness. Do final
tightening of screws. Do not over-tighten.
Step 9. Restore system to upright position.
HLA Driver Replacement
In order to replace either the midrange or low-frequency driver one must first remove the magazine
assembly. You will need a #2 Phillips Screwdriver (x-shaped drive) and a 3/16” Allen Screwdriver. Until you have
performed this procedure a few times it is advised that it be done with two people. Place all hardware that you
remove in a container to prevent loss. All hardware must be properly replaced to ensure the safe operation of the
speaker.
Magazine Removal:
1. Lay the unit on its face. (To protect the grille, you may first lay down a piece of flat cardboard or blanket).
2. Remove the bottom skid plate. Determine if nuts were used on the inside of the Spaceframe. If so, you will
need to hold them with the open-end wrench (front two nuts) or nut driver. Use the Phillips Screwdriver and
remove all 8 machine screws holding the bottom skid-plate in place. Remove the skid-plate.
3. Disconnect the wire leading to the High-Frequency Driver. Rotate the collar on the connector located at the
bottom of the HF Driver and pull the connector away from the Driver.